package cn.fan.study.third;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import lombok.extern.slf4j.Slf4j;

/**
 * 服务器客户端处理器
 *
 * @author HTHLKJ
 * @version 1.0
 * @date 2021/8/5 16:30
 */
@Slf4j
public class EchoClientHandler extends ChannelInboundHandlerAdapter {


    private int counter;
   static  final String ECHO_REQ="Hi, Lilinfeng. Welcome to Netty.$_";

    public EchoClientHandler() {


    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {

        for (int i = 0; i < 10; i++) {

            ctx.writeAndFlush( Unpooled.copiedBuffer(ECHO_REQ.getBytes()));
        }

    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        String body = (String) msg;
        log.info("客户端接收：{}; 数量：{}", body, ++counter);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
//        释放资源
        log.warn("出错啦：{}", cause.getMessage());
        ctx.close();
    }
}
